本文介绍了在Linux系统中，针对软RAID1设备的数据同步情况。通过`/proc/mdstat`输出显示，所有RAID1阵列如md0、md2、md3和md1均处于正常工作状态，每个阵列的两个磁盘成员[UU]表示所有块已同步，没有未读取的错误区域。这表明系统的冗余备份功能正常运行，确保了数据的安全性和可靠性。
Jun 8 04:02:01 susm01 syslogd 1.4.1: restart.
Jun 8 04:22:01 susm01 kernel: md: syncing RAID array md0
Jun 8 04:22:01 susm01 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Jun 8 04:22:01 susm01 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Jun 8 04:22:01 susm01 kernel: md: using 128k window, over a total of 104320 blocks.
Jun 8 04:22:01 susm01 kernel: md: delaying resync of md2 until md0 has finished resync (they share one or more physical units)
Jun 8 04:22:01 susm01 kernel: md: delaying resync of md3 until md0 has finished resync (they share one or more physical units)
Jun 8 04:22:01 susm01 kernel: md: delaying resync of md2 until md0 has finished resync (they share one or more physical units)
Jun 8 04:22:01 susm01 kernel: md: delaying resync of md1 until md0 has finished resync (they share one or more physical units)
Jun 8 04:22:01 susm01 kernel: md: delaying resync of md2 until md0 has finished resync (they share one or more physical units)
Jun 8 04:22:01 susm01 kernel: md: delaying resync of md3 until md0 has finished resync (they share one or more physical units)
Jun 8 04:22:02 susm01 kernel: md: md0: sync done.
Jun 8 04:22:02 susm01 kernel: md: delaying resync of md3 until md2 has finished resync (they share one or more physical units)
Jun 8 04:22:02 susm01 kernel: md: syncing RAID array md2
Jun 8 04:22:02 susm01 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Jun 8 04:22:02 susm01 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Jun 8 04:22:02 susm01 kernel: md: using 128k window, over a total of 4096448 blocks.
Jun 8 04:22:03 susm01 kernel: md: delaying resync of md1 until md2 has finished resync (they share one or more physical units)
Jun 8 04:22:03 susm01 kernel: RAID1 conf printout:
Jun 8 04:22:03 susm01 kernel: --- wd:2 rd:2
Jun 8 04:22:04 susm01 kernel: disk 0, wo:0, o:1, dev:sda1
Jun 8 04:22:04 susm01 kernel: disk 1, wo:0, o:1, dev:sdb1
Jun 8 04:22:36 susm01 kernel: md: md2: sync done.
Jun 8 04:22:36 susm01 kernel: md: syncing RAID array md1
Jun 8 04:22:36 susm01 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Jun 8 04:22:36 susm01 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Jun 8 04:22:36 susm01 kernel: md: using 128k window, over a total of 25599488 blocks.
Jun 8 04:22:36 susm01 kernel: md: delaying resync of md3 until md1 has finished resync (they share one or more physical units)
Jun 8 04:22:36 susm01 kernel: RAID1 conf printout:
Jun 8 04:22:36 susm01 kernel: --- wd:2 rd:2
Jun 8 04:22:36 susm01 kernel: disk 0, wo:0, o:1, dev:sda3
Jun 8 04:22:36 susm01 kernel: disk 1, wo:0, o:1, dev:sdb3
Jun 8 04:26:16 susm01 kernel: md: md1: sync done.
Jun 8 04:26:17 susm01 kernel: md: syncing RAID array md3
Jun 8 04:26:17 susm01 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Jun 8 04:26:17 susm01 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Jun 8 04:26:17 susm01 kernel: md: using 128k window, over a total of 458583360 blocks.
Jun 8 04:26:17 susm01 kernel: md: md3: sync done.
Jun 8 04:26:17 susm01 kernel: RAID1 conf printout:
Jun 8 04:26:17 susm01 kernel: --- wd:2 rd:2
Jun 8 04:26:17 susm01 kernel: disk 0, wo:0, o:1, dev:sda2
Jun 8 04:26:17 susm01 kernel: disk 1, wo:0, o:1, dev:sdb2
Jun 8 04:26:17 susm01 kernel: RAID1 conf printout:
Jun 8 04:26:17 susm01 kernel: --- wd:1 rd:2
Jun 8 04:26:17 susm01 kernel: disk 0, wo:0, o:1, dev:sda4
Jun 8 04:26:46 susm01 smartd[3080]: Device: /dev/sdb [SAT], 1 Currently unreadable (pending) sectors <
Jun 8 04:22:01 susm01 kernel: md: syncing RAID array md0
Jun 8 04:22:01 susm01 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Jun 8 04:22:01 susm01 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Jun 8 04:22:01 susm01 kernel: md: using 128k window, over a total of 104320 blocks.
Jun 8 04:22:01 susm01 kernel: md: delaying resync of md2 until md0 has finished resync (they share one or more physical units)
Jun 8 04:22:01 susm01 kernel: md: delaying resync of md3 until md0 has finished resync (they share one or more physical units)
Jun 8 04:22:01 susm01 kernel: md: delaying resync of md2 until md0 has finished resync (they share one or more physical units)
Jun 8 04:22:01 susm01 kernel: md: delaying resync of md1 until md0 has finished resync (they share one or more physical units)
Jun 8 04:22:01 susm01 kernel: md: delaying resync of md2 until md0 has finished resync (they share one or more physical units)
Jun 8 04:22:01 susm01 kernel: md: delaying resync of md3 until md0 has finished resync (they share one or more physical units)
Jun 8 04:22:02 susm01 kernel: md: md0: sync done.
Jun 8 04:22:02 susm01 kernel: md: delaying resync of md3 until md2 has finished resync (they share one or more physical units)
Jun 8 04:22:02 susm01 kernel: md: syncing RAID array md2
Jun 8 04:22:02 susm01 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Jun 8 04:22:02 susm01 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Jun 8 04:22:02 susm01 kernel: md: using 128k window, over a total of 4096448 blocks.
Jun 8 04:22:03 susm01 kernel: md: delaying resync of md1 until md2 has finished resync (they share one or more physical units)
Jun 8 04:22:03 susm01 kernel: RAID1 conf printout:
Jun 8 04:22:03 susm01 kernel: --- wd:2 rd:2
Jun 8 04:22:04 susm01 kernel: disk 0, wo:0, o:1, dev:sda1
Jun 8 04:22:04 susm01 kernel: disk 1, wo:0, o:1, dev:sdb1
Jun 8 04:22:36 susm01 kernel: md: md2: sync done.
Jun 8 04:22:36 susm01 kernel: md: syncing RAID array md1
Jun 8 04:22:36 susm01 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Jun 8 04:22:36 susm01 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Jun 8 04:22:36 susm01 kernel: md: using 128k window, over a total of 25599488 blocks.
Jun 8 04:22:36 susm01 kernel: md: delaying resync of md3 until md1 has finished resync (they share one or more physical units)
Jun 8 04:22:36 susm01 kernel: RAID1 conf printout:
Jun 8 04:22:36 susm01 kernel: --- wd:2 rd:2
Jun 8 04:22:36 susm01 kernel: disk 0, wo:0, o:1, dev:sda3
Jun 8 04:22:36 susm01 kernel: disk 1, wo:0, o:1, dev:sdb3
Jun 8 04:26:16 susm01 kernel: md: md1: sync done.
Jun 8 04:26:17 susm01 kernel: md: syncing RAID array md3
Jun 8 04:26:17 susm01 kernel: md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc.
Jun 8 04:26:17 susm01 kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction.
Jun 8 04:26:17 susm01 kernel: md: using 128k window, over a total of 458583360 blocks.
Jun 8 04:26:17 susm01 kernel: md: md3: sync done.
Jun 8 04:26:17 susm01 kernel: RAID1 conf printout:
Jun 8 04:26:17 susm01 kernel: --- wd:2 rd:2
Jun 8 04:26:17 susm01 kernel: disk 0, wo:0, o:1, dev:sda2
Jun 8 04:26:17 susm01 kernel: disk 1, wo:0, o:1, dev:sdb2
Jun 8 04:26:17 susm01 kernel: RAID1 conf printout:
Jun 8 04:26:17 susm01 kernel: --- wd:1 rd:2
Jun 8 04:26:17 susm01 kernel: disk 0, wo:0, o:1, dev:sda4
Jun 8 04:26:46 susm01 smartd[3080]: Device: /dev/sdb [SAT], 1 Currently unreadable (pending) sectors <
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